Description
GetSimple CMS is a content management system (CMS), and GetSimple CMS CE is the community edition of that CMS. Prior to version 1.5, the update handler in UpdateCE.php downloads a ZIP archive and extracts its contents into the web root without validating file types or extraction paths. Because PHP files are written into a web-accessible directory, an attacker who can cause a malicious archive to be processed achieves remote code execution as the web-server user. Entry names are also used unsafely, allowing directory traversal (../) to write files outside the intended extraction directory. This issue has been patched in version 1.5.
Published: 2026-10-01
Score: 9.1 Critical
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Thu, 01 Oct 2026 20:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Thu, 01 Oct 2026 19:45:00 +0000

Type Values Removed Values Added
Description GetSimple CMS is a content management system (CMS), and GetSimple CMS CE is the community edition of that CMS. Prior to version 1.5, the update handler in UpdateCE.php downloads a ZIP archive and extracts its contents into the web root without validating file types or extraction paths. Because PHP files are written into a web-accessible directory, an attacker who can cause a malicious archive to be processed achieves remote code execution as the web-server user. Entry names are also used unsafely, allowing directory traversal (../) to write files outside the intended extraction directory. This issue has been patched in version 1.5.
Title GetSimple CMS: CSRF, SSRF, and Unrestricted Zip Extraction
Weaknesses CWE-352
CWE-434
CWE-918
References
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H'}

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-10-01T19:54:11.631Z

Reserved: 2026-06-22T16:39:01.043Z

Link: CVE-2026-56660

cve-icon Vulnrichment

Updated: 2026-10-01T19:53:35.242Z

cve-icon NVD

Status : Deferred

Published: 2026-10-01T20:17:26.643

Modified: 2026-10-01T20:23:46.493

Link: CVE-2026-56660

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-01T20:30:04Z

Weaknesses
  • CWE-352

    Cross-Site Request Forgery (CSRF)

  • CWE-434

    Unrestricted Upload of File with Dangerous Type

  • CWE-918

    Server-Side Request Forgery (SSRF)